Easiest is probably to sign up for some credit cards for their fat sign on bonuses.
Depends on how quick you need them though as they can take up to 2 or 3 months to be creditted.
Amex Platinum Charge $1200 = 80k MR points = 80k Velocity points
Amex Velocity Platinum $349 = 50k Velocity Points
Citibank Signature $295 = 60k Citi Points = 40k Velocity points
ANZ Rewards black $0 (first year) = 50k ANZ points = 20k Velocity Points
Virgin Velocity High Flyer $349 = 20k velocity points